Will Miley Cyrus make up with Sinead O'Connor?

Miley Cyrus says she's not sure she'll make up with Sinead O'Connor after the back and forth drama between the singers.

When asked in an interview Tuesday if she and the 46-year-old performer would kiss and make up, Cyrus replied with: "I don't know. Are we supposed to kiss?"

Cyrus made the comments in New York when meeting fans at a CD signing for her new album, "Bangerz," released Tuesday.

The drama launched last week when the Irish chanteuse warned the young singer to avoid being sexually exploited by the music industry. The first open letter came after Cyrus said her "Wrecking Ball" video, where she is nude and licks a sledgehammer, was inspired by O'Connor's famous "Nothing Compares 2 U."

Cyrus responded on Twitter by mentioning O'Connor's struggles with bipolar disorder and compared the singer-songwriter to troubled actress Amanda Bynes, who has been treated in a psychiatric hospital.

The feud between the performers continued Tuesday when O'Connor published a fourth open letter to Cyrus, asking for an apology.

The "We Can't Stop" singer was all smiles as she thanked the hundreds of fans at Planet Hollywood for buying and listening to her new album. "Bangerz" features Britney Spears, Pharrell, will.i.am and others.

"It's so rad to see all my fans out here. I've been trying to keep this music a secret for a year, so now that it's bumping on the speakers it feels so good," she said.

Lockheed says object part of 'sensor technology' testing that ended ThursdayWhat the heck is that thing? It's fair to assume that question was on the minds of many people who traveled along Colo. 128 south of Boulder this week if they happened to catch a glimpse of what appeared to be a large, silver projectile perched alongside the highway and pointed north toward town.